Measuring the comparative cost of more than 200 items in each city, including housing, transportation, food, clothing, household goods, and entertainment, these are the most (and least) expensive cities to live in Down Under…

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#6 Sydney, NSW

Unsurprisingly, Sydney is the most expensive Australian city to live in, ranked at 29th globally.

It's the third most expensive city in the world to go to the movies -- tickets cost as much as $20 a time -- and Sydney's also one of the most expensive cities to eat out or grab a coffee in. This makes the cost of living dearer than in other Australian cities.

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#5 Melbourne, Victoria

While Melbourne ranks as the second most expensive city in Australia, it actually dropped in rankings by 12 places to 58th (and well below Sydney). However, this doesn't mean that living in this cultural hub is getting any cheaper for locals. "Cities in other countries moved up in the ranking, causing Australian cities to drop," said Yvonne Traber, Global Mobility Product Solutions Leader at Mercer.

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#4 Perth, WA

The sunny city of Perth ranked as the fourth most expensive city in Australia to call home, and came in at 61 on the global list. While rent prices in Sydney are 75.95 per cent higher than in Perth, and in general buying a property in much cheaper in the WA capital, things like the cost of basic amenities, owning a car and the price of a weekly grocery shop all make Perth one of Australia's most expensive cities.

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#3 Canberra, Australian Capital Territory

Australia's capital is the third most expensive city to live in Down Under, but ranks at a reasonable 77th in the world. The cost of living in Canberra is 12.52 per cent lower than in Sydney, with things like excellent and affordable public transport and competitive rent rates making things a little cheaper here than in other Australian cities.

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#2 Brisbane, Queensland

Coming in at 84 in the ranking of the world's most expensive cities, Brisbane dropped thirteen places in this year's list as the cost of living in other cities sky rocketed.

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#1 Adelaide, South Australia

The cosmopolitan capital of Adelaide came out on top as the most affordable major city in Australia to live in. Due to the fact that it's cheaper to buy and rent property in Adelaide than in other Australian cities, more affordable to eat out and go out, and buy a weekly grocery shop, the vibrant South Australian capital comes in as one of the cheapest places to live. For example, rent prices in Melbourne are 27.4 per cent higher than in Adelaide.